filter choke in power supply brand

[ee]

I am considering putting in a different brand choke in the power supply of my stereomour 1. I have the triad c7x and for no good reason I am tossing around the idea of putting in a "better" component. Has anyone tried chokes other than say hammond or the triad in a similar parafeed circuit to the stereomour. Not sure if there would be a benefit or possible benefit. $ would suggest yes but I mainly have found info related to build quality and $ for filter chokes in power supplies. The triad seems well built to me.
There is a Sowter CB14 10H 100ma 156ohm that looks good if I add a bit of series resistance to keep voltages good or do 4 of them haha. They are about the same size as the triad.
Thanks
Eric

[Paul Joppa]

In the original Paramour (that goes back a ways!) the C7-X is a plate choke, not a power supply choke. It's 10 henries, which is on the small side. More inductance will make a big improvement in the bass, but works best with a larger and more optimized output transformer. Back in the day, we had an upgrade kit with a higher-inductance choke and an upgrade transformer, which is no longer available.

I believe Magnequest still has a candidate set, and we have since then developed our own iron which is used in the Stereomour and S.E.X. amps. I'll link it below. Unfortunately I don't think there are detailed instructions on making the mod, but I believe it's been done by some.

This is a little complicated, but if one of these ideas interests you we can talk further.

[Alonzo]

Paul,
I thought re-using the C7-X in the power supply added to a smoother and more reactive power supply, the graphs on PSUD looked better with the choke than with the resistor.  I thought more inductance on the plate choke (I used Dowdy chokes in my Stereomour I) gave a better bass response.
Not meaning to contradict, just trying to understand it myself, I thought adding the choke to the power supply made for a cleaner power which is better overall and more inductance in the plate choke made for better response in the lower frequencies for a given output transformer.
Alonzo

Excuse this post if it is crazy talk, too many super chavela's with dinner, its the first really hot day here and we are celebrating....

[Paul Joppa]

Ah! I did not know you had modified the power supply and upgraded the iron, so I assumed you were still running the stock components. Sorry for the confusion - your understanding is correct.

You are also correct in saying that a change in the power supply choke is "...for no good reason..." - there is no technical reason to prefer a different choke; the C7-X is as you say well built. I have no problem with making changes for "no good reason" - sometimes you discover something unexpected. If you do try it, and find a difference, please share on the forum!

[braubeat]

a choke with more inductance and the same dcr would smooth the supply without altering the voltage much.

Michael

[Paul Birkeland]

How much power supply ripple are you hearing out of your speakers? 

Choke quality isn't going to do a lot for you in a power supply.  A plate choke needs to be designed carefully for good AF response, while a power supply choke does not.  Paying extra for a plate choke to use in a power supply may actually have some disadvantages.

-PB